I use these printable, easy-to-use posters as part of a class thank you card every year for classroom guests, volunteers, special visitors, special teachers/staff, community members, etc.
I simply print out the posters, have my students hold them in a group pose, and snap a quick picture. You can email the image or print it off! To personalize it even further, I have my students sign around the photo before sharing it. You can scan/save the photo to use over and over again throughout the year too! (You could also use these pages as a banner. Go into your printer settings for more size options!)